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© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved. PI-Tandem Headblock - en, Rev 01, Sept 2014

Product Information

Tandem Headblock

The Bromma Tandem Headblock gives significant improvements

in productivity. It is specially designed to be operated on a ship-

to-shore crane and quickly shift between a Bromma Tandem

spreader and a regular ship-to-shore single lift or twinlift

spreader. The Tandem Headblock is equipped with heavy duty

twistlocks, and can also be equipped with an optional automatic

connector for power and signals to the spreader. The sheave

wheels automatically expand to a wide position for tandem lift

when connecting to a tandem spreader and to a narrow position

when attaching to a single or twinlift spreader.

The headblock consists of a center platform and two identical

end beams. The end beams are designed as two vertical plates

with the two movable sheave wheel arm assemblies, the locking

shaft mechanism and the heavy duty twistlocks placed between

them. The hydraulic powerpack, the electrical cabinet and a

cable damper (optional) are mounted on the center platform. If

the headblock is equipped with the optional Bromma Autocon-

nector upper part, it will also be mounted on the platform.

Made of high quality steel, the Bromma Tandem Headblock pro-

vides high lifting capacity with a low nominal tare weight thanks

to the end beam design. The Headblock is designed in accordance

with EN13001. All components can be easily assembled, adjusted,

removed and are accessible for inspection and maintenance.

The headblock comes with a controller, reducing and preventing

downtime through improvements in the area of electrical

connections.

Major Features Automatically expand or retract the sheave wheels when

moving from single spreader to tandem operation Fast trouble shooting With the optional Bromma Autoconnector, quickly shift

between a Bromma Tandem spreader and a regular

ship-to-shore single lift or twinlift spreader, and attach

and connect to a spreader without any manual work. Fulfils the design criteria among EN13001, DIN 15018

H2B4, FEM 1.001 and British Standard BS 2573

The headblock shown is customized with extra equipmentSpreader combinations with Tandem headblock

STS Tandem

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© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved. PI-Tandem Headblock - en, Rev 01, Sept 2014

Two vertical plates in combination with spacer shafts and gable plates form the end beam box which carries the heavy load between the headblock twistlocks and the sheave wheels.

Four heavy duty twistlocks are located in the lower corners of the headblock end beams to engage and lift the spreader. A hydraulic cylinder rotates the twistlock and two sensors indicate the position, Locked or Unlocked. A landing pin safety system is provided to assure that the headblock is properly landed on the spreader before rotating the twistlocks.

Locking shafts

Sheave wheelarm

Sheave wheelcylinder

End beamHeadblock twistlocks

Sensors for locked/ unlocked positions

Landing pin

Hydrauliccylinder

Switch for landing pin

Twistlock

Headblock Twistlocks

End beam

Two cylinders drive the sheave wheel arm assemblies in each end beam to synchronously rotate 60 degrees from the tandem lift position into the single spreader lift position. The sheave wheel arm assemblies are fixed in both posi-

tions by hydraulically manouvered locking shaftsH

A spring loaded landing pin near each twistlock is pushed up into the twistlock housing when the headblock is landed on the spreader.When the headblock is properly landed, the landing pin will activate a sensor. The twistlocks can only be turned when all the corners of the headblock are landed. At the same time, the blocking key is moved high enough so the blocking stop on the twistlock lever arm passes underneath it. If the spreader is not properly landed, the sensor will not be activated and the blocking key will get in the way of the blocking stop. This will stop the twistlocks from turrning.

3www.bromma.comWe reserve the right to change the design and technical data without prior notice.

© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved. PI-Tandem Headblock - en, Rev 01, Sept 2014

The complete hydraulic unit consists of a tank, a pump, an electrical motor, valves and a filter, altogether shock mount-ed in a sturdy frame with protection covers.

The foot and flange mounted three phase cage induction electric motor corresponds to the major worldwide stan-dards. The motor gives 3 kW at 50 Hz and the protection grade is IP 55.

To achieve maximum durability a robust piston pump is used. The pump has low noise level and is easy to service.

The oil tank has an open design and is easy to clean and inspect. The tank holds 50 litres and the oil level is indi-cated through the sight glass. The hydraulic oil is filtered through an externally mounted 10 micron absolute rated line filter. The hydraulic oil meets the requirements of ISO

code 17/15/13 cleanliness classificatioElectrical System

The main electrical components are placed on the head-block center platform. The cable damper (optional), the electrical cabinet, signal lights and the Bromma Autocon-nector headblock part (optional).

LED type signal lights are provided to indicate landed (yel-low) / locked (red) / unlocked (green)/ Twin mode (blue). These lamps are positioned on the headblock center plat-form. Each lamp panel indicates the status of the nearest spreader end beam. In Tandem mode all four panels are activated. In single spreader mode only lanside panels are used.

The electrical components are mounted in a stainless steel cabinet, IP65. All cables are well protected in cable chains. The power required to operate the headblock’s electrical components is obtained from the crane. All electrical com-ponents on the headblock are designed to withstand load imposed during container handling operations and suitable for a marine environment.

The headblock is supplied with CANopen distributors based on a standard field bus system.This enhances the pos-sibility of monitoring each I/O point and reduces the num-ber of cables needed and the replacement time for connect-ing sensors and actuators to the controls..

Autoconnector (optional)

Oil tank

Pump- motor unit

Oil filter

Electric cabinet

Cable damper (optional)

LED signal lights

Hydraulic Unit Electrical system

CANopen distributor

4www.bromma.comWe reserve the right to change the design and technical data without prior notice.

© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved. PI-Tandem Headblock - en, Rev 01, Sept 2014

The Bromma automatic connector makes it possible to land the headblock on a spreader and connect the power and the signal cables without any manual work.

The autoconnector HB part is mounted on the headblock and the bottom part on the spreader. When landing, the cones forces the covers on the spreader part to split up. A signal starts the activator to lower the inner box and to couple the connector blocks. Sensors on the headblock part

Autoconnector (Optional)

Control system

Activator

Cones

Inner box

HB part

Spreader part

Connectorblocks

Covers

keeps control of the position of the inner box. A signal from one of the pins in one of the HB part connectors is bridged in the spreader part and back to the HB to ensure the connection.

When disconnecting, the activator raises the inner box to its top position and when the headblock is hoisted the spreader part cover will close and seal the connector blocks.

The controller is placed inside the electric cabinet on the center platform. It can be set to manual or automatic mode. In manual mode the crane driver can give commands for Lock /unlock on spreader, Connect/ disconnect Autocon-nector to spreader (if the optional Autoconnector is in-stalled), sheave wheels in or out. In auto mode only two commands can be given. Connect or disconnect.

Controller

5www.bromma.comWe reserve the right to change the design and technical data without prior notice.

© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved. PI-Tandem Headblock - en, Rev 01, Sept 2014

Dimensional Drawings – Tandem Headblock

BR1112500

2013-03-13

DATE

1\\\1\

REV.

DRAWING\NUMBER

SHEET

STANDARD

FORMAT

TOLERANCE\GENERAL

WEIGHT

kg

GENERAL\ASSEMBLY

A1

AUTOMATIC\TANDEM\HB

\b

MATERIAL

ALT.\\\\\\\\\\\

SS-ISO\2768-c

5778

RAW\MATERIAL\TYPE

-RAW\MATERIAL\PROFILE\DIM

ENSION\AND\TOLERANCE

-RAW\MATERIAL\ART.NR

--

SIGNED\BY

extservape

6*+5&4#9+0)+5%12;4+)*6#0&+52412'46;1($41//#%1037+26*'&'5+)0#0&14%105647%6+105%106#+0'&6*'4'+0/#;016$'

%12+'&144'241&7%'&9+6*1766*'94+66'0%105'061(6*'190'4

5100

5500

1387

2550

SHEAVEWHEELSIN

1186

2406

1680

2230

2420

SHEAVEWHEELSOUT

1300

2691

3911

2028

1492

163

150

500

2550

500

We reserve the right to change the design and technical data without prior notice.© 2014 Cargotec Sweden AB, Bromma Conquip – All rights reserved.

PI-Tandem Headblock - en, Rev 01, Sept 2014

For nearest contact and latest information on Bromma products and services, visit the Bromma website at www.bromma.com

Bromma is part of Cargotec Corporation

Technical Data Tandem Headblock

Lifting capacity: (According to EN13001 HC2, HD1, U8, Q2 (2e6 cycles))

Evenly distributed load SWL 165 tonnes Lifting capacity (10% gravity point adjustment) 165 tonnes

Lifting lugs 4 x 16 tonnes

Weight: About 6.8 tonnes (without extra equipment)

Sheave wheels out: From C/C 1050 mm to C/C 2650 mm in